Gymnosporangium globosum. [Descriptions of Fungi and Bacteria].

Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium globosum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia chiefly on hawthorn (Crataegus), also on apple (Malus sylvestris) and other Malus spp., pear (Pyrus communis) and Sorbus. Telia on Juniperus virginiana and related species of the 'sabina' group. DISEASE: American hawthorn rust. Aecia chiefly on the leaves, rare on fruit. Telia perennial on globoid stem galls on juniper. GEOGRAPHICAL DISTRIBUTION: Widespread in eastern states of Canada and the USA. Also recorded in Alaska (CMI Map 123, ed. 2, 1975).

Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium juniperi-virginianae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on apple (Malus sylvestris) and crab apple (Malus sp.). Telia on Juniperus virginiana and related species of the 'sabina' group. DISEASE: American apple rust. Aecia chiefly on the leaves but also on stems and fruit. Telia on globoid or kidney-shaped galls of juniper. GEOGRAPHICAL DISTRIBUTION: Widespread in the USA east of the Rockies, also in California, Ontario and Quebec (CMI Map 61, ed. 2, 1965).


Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium clavipes. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on quince (Cydonia vulgaris); apple (Malus sylvestris) and hawthorn (Crataegus), also on Amelanchier, Aronia, Cheanomeles, Cotoneaster, Mespilus, Photinia, Pyrus and Sorbus but not of any importance on pear (Pyrus communis). Telia on Juniperus communis, J. sihirica and J. virginiana. DISEASE: Quince rust. Aecia chiefly on fruit, sometimes on fusiform swellings of stems and leaf veins of quince; not reported on apple foliage and though infections damage the fruit aecial pustules are rarely formed on fruit of apple. Telia on slight fusiform swellings of twigs and larger branches of juniper. GEOGRAPHICAL DISTRIBUTION: Widespread throughout Canada and the USA. Also reported from Mexico (CMI Map 121, ed. 2, 1975).


Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium libocedri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on apple (Malus sylvestris) and other Malus spp., pear (Pyrus communis) and quince (Cydonia vulgaris). Also on Amelanchier, Chaenomeles, Crataegus and Sorbus. Telia on Calocedrus (Libocedrus) decurrens. DISEASE: Aecia on leaves and fruits. Telia on leaves; usually not causing distortions but sometimes witches' brooms present. GEOGRAPHICAL DISTRIBUTION: Northwestern USA (Washington, Oregon to northern California and Nevada).


Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium asiaticum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on quince (Cydonia vulgaris), European pear (Pyrus communis), Japanese pear (P. sinensis) and other Pyrus spp., Chaenomeles spp. and Photinia spp. (and possibly Crateagus spp.). Telia on Juniperus chinensis and J. procumbens. DISEASE: Japanese pear rust. Aecia on leaves. Telia on leaves and green stems of juniper; not causing any swelling of tissues. GEOGRAPHICAL DISTRIBUTION: Japan, Korea, China. Intercepted in the USA.


Phytotaxa ◽  
2015 ◽  
Vol 217 (2) ◽  
pp. 164 ◽  
Author(s):  
İlker Çinbilgel ◽  
özkan Eren ◽  
Hayri Duman ◽  
Mustafa Gökceoğlu

Pimpinella ibradiensis, an unusual new species found in the Toka Yayla (İbradı, Antalya) in southern Anatolia, is described and illustrated. Site conditions, synecology and conservation status of P. ibradiensis are considered. In light of the comparison with the other closely related four species, namely P. nephrophylla, P. flabellifolia, P. sintenisii and P. paucidentata, its similarity within the genus are discussed. P. ibradiensis is easly distinguished from its relatives by its white petals, presence of bracts and bracteoles, larger fruits (4–5.5 × 1–2 mm), and having serrulate basal leaves with 60–95 strongly cartilaginous teeth along margins. The geographical distribution of P. ibradiensis and closely related species are mapped and the identification key of those species is updated.


Phytotaxa ◽  
2021 ◽  
Vol 502 (2) ◽  
pp. 149-159
Author(s):  
HASAN YILDIRIM ◽  
MEHTAP TEKŞEN

In this study, Fritillaria arsusiana (Liliaceae) is described and illustrated as a new species from Hatay province in southern Anatolia, Turkey. It is related to F. amana and F. hermonis by habitus features and broadly campanulate flowers, but differs mainly by its bulb shape and size, smaller leaf and flower features, and flower colour. It has also been morphologically compared with F. wendelboi, F. pinardii, and F. latakiensis. The detailed description, diagnostic characters, original photographs, geographical distribution, habitat and phenology, etymology, conservation status, and identification key of the new and the related species are presented in this study. IUCN conservation status of F. arsusiana is suggested as Critically Endangered (CR).


Author(s):  
G. Laundon

Abstract A description is provided for Gymnosporangium yamadae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on apple (Malus sylvestris) and other Malus spp. Telia on Juniperus chinensis. DISEASE: Japanese apple rust. Aecia on leaves rarely on stems and fruit. Telia on globoid swellings or galls of juniper. GEOGRAPHICAL DISTRIBUTION: Japan, Korea, China.


Author(s):  
S. M. Khairi

Abstract A description is provided for Podosphaera clandestina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Crataegus monogyna, C. pentagyna, C. punctata, Mespilus germanica, Cratoegomespilus grandiflora, C. dardari, Pyrus communis, Cydonia vulgaris, Pyrocydonia winkleri and P. danieli. DISEASE: Hawthorn mildew. Severe attacks cause defoliation and death of terminal buds on young seedlings and on soft shoots on hedges and trees. The disease has been recorded on hawthorn fruits. The host plant can be grown only from seeds. GEOGRAPHICAL DISTRIBUTION: Worldwide (Salmon, 1900; 45, 3081). Cleistothecia play no part in the disease in England. The overwintering mycelium, inside infected buds, survives until the following spring. These infected buds are the primary infections found each year. Secondary infection is by air-borne conidia.


Author(s):  

Abstract A new distribution map is provided for Gymnosporangium globosum Farlow. Hosts: Apple (Malus pumila), pear (Pyrus communis), Crataegus & Juniperus). Information is given on the geographical distribution in North America, Canada, Ontario, Quebec, Saskatchewan, Mexico, USA, Colorado, North Dakota, South Dakota, Nebraska, Oklahoma, Texas, AK.


Author(s):  
D. W. Minter

Abstract A description is provided for Colpoma crispum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: On dead, rather brittle twigs of Picea abies, but usually attached but sometimes fallen by the time ascomata contain ascospores. Probably involved in self-pruning of the tree, but associated with lichen colonies unlike species of Therrya on Pinus (IMI Descriptions 1297 and 1298), and Colpoma on Quercus (IMI Description 942) which occur on twigs without lichen colonies. HOSTS: Juniperus virginiana (twig), Larix sp. (bark, twig), Picea abies (bark, twig), Picea sp. (bark), Pseudotsuga menziesii (twig). GEOGRAPHICAL DISTRIBUTION: Germany, Italy, Sweden, UK (England, Scotland, Wales), Ukraine, USA (Oregon). Unsuccessful searches in north-west Poland. Altitude records exist up to 950m (Ukraine). TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.


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